DE3813660C2 - Flüssige Organopolysiloxanzusammensetzung und ihre Verwendung als Kupplungsflüssigkeit - Google Patents
Flüssige Organopolysiloxanzusammensetzung und ihre Verwendung als KupplungsflüssigkeitInfo
- Publication number
- DE3813660C2 DE3813660C2 DE3813660A DE3813660A DE3813660C2 DE 3813660 C2 DE3813660 C2 DE 3813660C2 DE 3813660 A DE3813660 A DE 3813660A DE 3813660 A DE3813660 A DE 3813660A DE 3813660 C2 DE3813660 C2 DE 3813660C2
- Authority
- DE
- Germany
- Prior art keywords
- groups
- parts
- weight
- organopolysiloxane composition
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000203 mixture Substances 0.000 title claims description 30
- 239000007788 liquid Substances 0.000 title claims description 17
- 229920001296 polysiloxane Polymers 0.000 title claims description 12
- 230000008878 coupling Effects 0.000 title claims description 8
- 238000010168 coupling process Methods 0.000 title claims description 8
- 238000005859 coupling reaction Methods 0.000 title claims description 8
- -1 anilinophenoxy groups Chemical group 0.000 claims description 39
- 125000005375 organosiloxane group Chemical group 0.000 claims description 18
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 10
- 229910052726 zirconium Inorganic materials 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 125000001424 substituent group Chemical group 0.000 claims description 9
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 8
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 7
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- 239000010936 titanium Substances 0.000 claims description 5
- 125000004429 atom Chemical group 0.000 claims description 4
- 229920001577 copolymer Polymers 0.000 claims description 4
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical group [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- 150000002736 metal compounds Chemical class 0.000 claims description 3
- 150000003754 zirconium Chemical class 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical group [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 2
- 150000002763 monocarboxylic acids Chemical class 0.000 claims description 2
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 claims description 2
- 229920001921 poly-methyl-phenyl-siloxane Polymers 0.000 claims description 2
- 125000005184 naphthylamino group Chemical group C1(=CC=CC2=CC=CC=C12)N* 0.000 claims 1
- 125000003944 tolyl group Chemical group 0.000 claims 1
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 9
- 239000012530 fluid Substances 0.000 description 7
- 230000004580 weight loss Effects 0.000 description 5
- 125000004469 siloxy group Chemical group [SiH3]O* 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 3
- 229910052735 hafnium Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- JTTMYKSFKOOQLP-UHFFFAOYSA-N 4-hydroxydiphenylamine Chemical compound C1=CC(O)=CC=C1NC1=CC=CC=C1 JTTMYKSFKOOQLP-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- BPYXFMVJXTUYRV-UHFFFAOYSA-J octanoate;zirconium(4+) Chemical compound [Zr+4].CCCCCCCC([O-])=O.CCCCCCCC([O-])=O.CCCCCCCC([O-])=O.CCCCCCCC([O-])=O BPYXFMVJXTUYRV-UHFFFAOYSA-J 0.000 description 2
- 125000000962 organic group Chemical group 0.000 description 2
- 238000010525 oxidative degradation reaction Methods 0.000 description 2
- 125000004430 oxygen atom Chemical group O* 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- DUFCMRCMPHIFTR-UHFFFAOYSA-N 5-(dimethylsulfamoyl)-2-methylfuran-3-carboxylic acid Chemical compound CN(C)S(=O)(=O)C1=CC(C(O)=O)=C(C)O1 DUFCMRCMPHIFTR-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 1
- HSRJKNPTNIJEKV-UHFFFAOYSA-N Guaifenesin Chemical compound COC1=CC=CC=C1OCC(O)CO HSRJKNPTNIJEKV-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 229910020175 SiOH Inorganic materials 0.000 description 1
- RYLHMXPGTMYTTF-UHFFFAOYSA-N acetyl 3-oxobutanoate Chemical group CC(=O)CC(=O)OC(C)=O RYLHMXPGTMYTTF-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 125000004423 acyloxy group Chemical group 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 125000004104 aryloxy group Chemical group 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- HSVPRYWNEODRGU-UHFFFAOYSA-J butanoate;zirconium(4+) Chemical compound [Zr+4].CCCC([O-])=O.CCCC([O-])=O.CCCC([O-])=O.CCCC([O-])=O HSVPRYWNEODRGU-UHFFFAOYSA-J 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- DKOQGJHPHLTOJR-WHRDSVKCSA-N cefpirome Chemical compound N([C@@H]1C(N2C(=C(C[N+]=3C=4CCCC=4C=CC=3)CS[C@@H]21)C([O-])=O)=O)C(=O)\C(=N/OC)C1=CSC(N)=N1 DKOQGJHPHLTOJR-WHRDSVKCSA-N 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- JHAYEQICABJSTP-UHFFFAOYSA-N decoquinate Chemical group N1C=C(C(=O)OCC)C(=O)C2=C1C=C(OCC)C(OCCCCCCCCCC)=C2 JHAYEQICABJSTP-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 229920005645 diorganopolysiloxane polymer Polymers 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- XYIBRDXRRQCHLP-UHFFFAOYSA-N ethyl acetoacetate Chemical group CCOC(=O)CC(C)=O XYIBRDXRRQCHLP-UHFFFAOYSA-N 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 150000002762 monocarboxylic acid derivatives Chemical class 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- 150000001282 organosilanes Chemical class 0.000 description 1
- 150000003961 organosilicon compounds Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012667 polymer degradation Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000002411 thermogravimetry Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Chemical group 0.000 description 1
Classifications
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- C10M169/04—Mixtures of base-materials and additives
- C10M169/044—Mixtures of base-materials and additives the additives being a mixture of non-macromolecular and macromolecular compounds
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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- C08L83/04—Polysiloxanes
- C08L83/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
-
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- C10M129/26—Carboxylic acids; Salts thereof
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- C10M129/30—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 7 or less carbon atoms
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- C10M129/40—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 8 or more carbon atoms monocarboxylic
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- C10M169/04—Mixtures of base-materials and additives
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- C08G77/04—Polysiloxanes
- C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
- C08G77/26—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen nitrogen-containing groups
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/42—Block-or graft-polymers containing polysiloxane sequences
- C08G77/44—Block-or graft-polymers containing polysiloxane sequences containing only polysiloxane sequences
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- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/70—Siloxanes defined by use of the MDTQ nomenclature
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- C10M2207/122—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms monocarboxylic
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/06—Groups 3 or 13
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/042—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for automatic transmissions
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/044—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for manual transmissions
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/046—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for traction drives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/08—Hydraulic fluids, e.g. brake-fluids
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Description
Die Erfindung bezieht sich auf flüssige Organopolysiloxanzu
sammensetzungen, und sie betrifft insbesondere Organopoly
siloxanzusammensetzungen, deren Viskosität sich in Abhängig
keit von der Temperatur und Zeit nur wenig verändert.
Die Verwendung flüssiger Organosiloxane als Schmiermittel,
Wärmeübertragungsflüssigkeiten und viskose Kupplungsflüssig
keiten ist bereits bekannt. Aus Gründen einer zufriedenstel
lenden Wirkungsweise bei insbesondere der letztgenannten An
wendung, sollen diese Flüssigkeiten bestimmte Eigenschaften
aufweisen und dabei über den Arbeitstemperaturbereich und
während der beabsichtigten Arbeitsdauer oxidationsbeständig
sein und nur eine geringe oder überhaupt keine Veränderung
ihrer Viskosität ergeben. Am gebräuchlichsten sind bei sol
chen Anwendungen die flüssigen Polydimethylsiloxane. Bei
alleiniger Anwendung bei hohen Temperaturen erfahren die
Polydimethylsiloxane jedoch eine Viskositätserhöhung unter
anschließender Gelierung. Durch Zusatz bestimmter Antioxi
dationsmittel läßt sich eine solche Erhöhung der Viskosität
verzögern. So ist beispielsweise aus US-A 3 328 350 bekannt,
daß der Zusatz eines Reaktionsprodukts aus einem Organosi
loxan und p-Anilinophenol zu flüssigen Polydimethylsiloxanen
eine Verbesserung ihrer Stabilität gegenüber einem oxidativen
Abbau ergibt. In US-A 4 537 691 wird eine neue flüssige Sili
conzusammensetzung beschrieben, die als Arbeitsflüssigkeit
bei hohen Temperaturen verwendbar ist und aus einem Gemisch
aus einem Diorganopolysiloxan, welches sowohl Trihydrocarbyl
siloxygruppen als auch Hydroxylgruppen enthält, und Siloxanen
besteht, die bestimmte Aminoarylsubstituenten, wie Anilino
phenoxygruppen, enthalten.
In EP-A 0 191 456 werden verbesserte viskose Kupplungs
flüssigkeiten auf Basis eines Organopolysiloxans beschrieben,
die aus einem Gemisch aus einem flüssigen Organopolysiloxan,
einer Zirconium enthaltenden Organsiloxanverbindung und einer
Cer enthaltenden Organosiloxanverbindung bestehen.
Die bekannten Flüssigkeiten sind bei normalen Arbeitstem
peraturen als Flüssigkeiten für Gebläsekupplungen zwar zu
friedenstellend wirksam, doch braucht man bei den modernen
Hochleistungsmotoren Füssigkeiten, die über eine noch bessere
Beständigkeit gegenüber einem oxidativen Abbau und einer Ver
änderung ihrer Viskosität verfügen.
Diese Aufgabe wird erfindungsgemäß gelöst durch eine Organo
polysiloxanzusammensetzung aus (1) 100 Gewichtsteilen eines
flüssigen Polydiorganosiloxans, bei dem wenigstens 70% der
gesamten organischen Substituenten Methylgruppen sind und die
eventuellen restlichen organischen Substituenten aus
Alkylgruppen mit 2 bis einschließlich 14 Kohlenstoffatomen
und Phenylgruppen ausgewählt sind, und (2) 0,01 bis 7,5 Ge
wichtsteilen eines Organosiloxans, das wenigstens eine sili
ciumgebundene Gruppe enthält, die aus Anilinophenoxygruppen
und Naphthylaminophenoxygruppen ausgewählt ist, die dadurch
gekennzeichnet ist, daß diese Organopolysiloxanzusammen
setzung als weitere Komponente (3) eine Metallverbindung ent
hält, die ausgewählt ist aus (i) Siloxymetallverbindungen,
welche in ihrem Molekül wenigstens ein Metallatom aufweisen,
das aus Titan-, Zirconium- und Hafniumatomen ausgewählt ist
und über eine TiOSi-, ZrOSi oder HfOSi-Bindung an Silicium
gebunden ist, und (ii) Zirconiumsalzen von Monocarbonsäuren,
wobei diese Metallverbindung in einer solchen Menge zugegen
ist, daß sich 0,001 bis 0,25 Gewichtsteile Metall ergeben.
Die in der erfindungsgemäßen Zusammensetzung vorhandenen
Polydiorganosiloxane (1) lassen sich durch die mittlere
Einheitsformel
darstellen, worin R für die angegebenen siliciumgebundenen
organischen Substituenten steht und n einen Wert von etwa
1,85 bis etwa 2,15, vorzugsweise von 1,99 bis 2,01, hat.
Diese Polydiorganosiloxane sind demnach vorwiegend line
are Verbindungen, die jedoch auch einen verhältnismäßig ge
ringen Anteil an kettenverzweigenden Einheiten (RSiO3/2)
aufweisen können. Sie enthalten vorzugsweise endblockierende
Einheiten der Formel R3SiO1/2, wobei jedoch auch Polydi
organosiloxane geeignet sind, die keine solchen Einheiten
aufweisen. Die Polydiorganosiloxane können daher beispiels
weise durch die Gruppen ∼SiOH oder ∼SiOR endblockiert sein.
Wenigstens 70% der gesamten Gruppen R dieser Polydiorgano
siloxane sind Methylgruppen. Irgendwelche restliche Gruppen R
können beispielsweise Ethyl, Butyl, Trimethylpentyl, Dodecyl
oder Phenyl sein. Zu Beispielen für Polydiorganosiloxane (1)
gehören daher trimethylsilylendblockierte Polydimethyl
siloxane, dimethylphenylsilylendblockierte Polydimethyl
siloxane, trimethylsilylendblockierte Copolymerisate aus Di
methylsiloxaneinheiten und Phenylmethylsiloxaneinheiten sowie
hydroxylendständige Polydimethylsiloxane. Die Polydiorgano
siloxane (1) können aus einem einzelnen Siloxanpolymeren oder
aus einem Gemisch aus Siloxanpolymeren bestehen, welche
unterschiedliche Substituenten, Strukturen oder Viskositäten
aufweisen. Erfindungsgemäß werden vorzugsweise Polydiorgano
siloxane verwendet, die aus einem Gemisch aus etwa 70 bis 95
Gewichtsteilen eines Polydimethylsiloxans und 5 bis 30 Ge
wichtsteilen eines Polymethylphenylsiloxans oder eines Co
polymerisats aus Dimethylsiloxan und Methylphenylsiloxan be
stehen.
Die Viskosität der Polydiorganosiloxane (1) kann innerhalb
breiter Grenzen schwanken und beispielsweise von 0,0005 bis
0,1 m2/s bei 25°C reichen, sofern diese Polydiorganosiloxane
dann bei 25°C flüssig sind. Die jeweilige Viskosität wird im
allgemeinen unter Berücksichtigung der der jeweiligen Anwen
wendung entsprechenden Bedingungen ausgewählt. Zur Verwendung
als viskose Kupplungsflüssigkeiten, wie beispielsweise bei
den Kupplungen von Automobilventilatoren, werden Polydi
organosiloxane mit einer Viskosität im Bereich
von 0,001 bis 0,05 m2/s bevorzugt.
Die Komponente (2) der erfindungsgemäßen Zusammensetzung ist
ein Organosiloxan, das wenigstens eine siliciumgebundene
Gruppe enthält, die aus Anilinophenoxygruppen und Naphthyl
aminophenoxygruppen ausgewählt ist. Die restlichen silicium
gebundenen Substituenten sind ausgewählt aus Alkylgruppen,
wie Methyl, Ethyl, Isopropyl und Phenyl, wobei Organosiloxane
bevorzugt sind, bei denen die restlichen Substituenten prak
tisch insgesamt Methylgruppen darstellen. Das Organosiloxan
(2) ist vorzugsweise ebenfalls ein praktisch lineares Poly
diorganosiloxan.
Im Organosiloxan (2) soll wenigstens eine Gruppe
C6H5NHC6H4O- und/oder C10H7NHC6H4O- vorhanden
sein. Solche Gruppen können aus den Siliciumatomen längs der
Siloxankette herausstehen und/oder an ein endständiges Si
liciumatom gebunden sein. Die Organosiloxane (2) können Homo
polymerisate oder Copolymerisate sein. Sie stellen bekannte
Substanzen dar, die sich beispielsweise durch Umsetzung von
Acyloxysiloxanen mit dem geeigneten Phenol, beispielsweise
mit p-Anilinophenol, nach dem in US-A 3 328 350 beschriebenen
Verfahren herstellen lassen. Ein anderes Verfahren zur Her
stellung solcher Organosiloxane besteht in einer Umsetzung
des jeweiligen Phenols mit einem siliciumgebundene Chloratome
enthaltenden Organosiloxan in Anwesenheit eines Mittels, das
den als Nebenprodukt gebildeten Chlorwasserstoff bindet. Der
in den erfindungsgemäßen Zusammensetzungen verwendete Anteil
der Komponente (2) ist weitgehend abhängig vom Ausmaß des ge
wünschten Effekts und vom Anteil der angegebenen Amino
phenoxysubstituenten im Molekül im Verhältnis zu den
restlichen Substituenten. Der Anteil der Komponente (2) reicht
von wenigstens 0,01 bis zu 7,5 Teilen auf 100 Teile der
Komponente (1), wobei die Menge der Komponente (2)
vorzugsweise 0,1 bis 2,5 Teile auf 100 Teile der Komponente
(1) ausmachen soll.
Die Komponente (3) in den erfindungsgemäßen Zusammensetzungen
ist (i) eine Siloxymetallverbindung, bei welcher das Metall
Zr, Ti oder Hf ist und in welcher das Metallatom über ein
Sauerstoffatom an ein Siliciumatom gebunden ist, oder (ii)
ein Zirconiumsalz einer Monocarbonsäure oder auch ein Gemisch
aus (i) und (ii).
Die Siloxymetallverbindungen (i) sind Organosiliciumverbin
dungen, wie Organosilane und Organosiloxane, welche wenig
stens eine Bindung ZrOSi, TiOSi oder HfOSi pro Molekül auf
weisen. Die restlichen Wertigkeiten der Siliciumatome können
durch andere Metall-Sauerstoff-Bindungen, durch einwertige
Kohlenwasserstoffgruppen, wie Methyl, Ethyl, Propyl, Octyl,
Vinyl, Phenyl oder Benzyl, oder durch zweiwertige Sauerstoff
atome, welche wiederum an andere Siliciumatome gebunden sind,
so daß Siloxanbrücken -SiOSi- gebildet werden, abgesättigt
sein. Irgendwelche Wertigkeiten der Atome Zr, Ti oder Hf, die
nicht durch Siloxygruppen abgesättigt sind, sind durch sauer
stoffgebundene organische Gruppen, beispielsweise Alkoxygrup
pen, wie Methoxy, Ethoxy, Butoxy und Decoxy, Aryloxygruppen,
wie Phenoxy, Acyloxygruppen, wie Acetoxy, Propionoxy und
Octanoxy, und Gelatgruppen, wie Ethylacetoacetat und Acetyl
acetoacetat, abgesättigt. Eine Art an Siloxymetallverbindun
gen (i) kann daher beispielsweise der allgemeinen Formel
-[(CH3)2SiO]xM∼
entsprechen, worin M für Zr, Ti oder Hf steht und die rest
lichen Wertigkeiten von M durch andere Siloxygruppen, wie
Gruppen -(CH3)2SiO-, oder durch sauerstoffverknüpfte
organische Gruppen der oben angegeben Art abgesättigt sind.
Zu einer anderen Art an Siloxymetallverbindungen (i) gehören
beispielsweise die Verbindungen der Formel
[(CH3)3SiO]4M.
Die Metallsiloxyverbindungen sind bekannte Substanzen, welche
sich beispielsweise durch Erhitzung eines Gemisches aus einem
Polydimethylsiloxan und einer Organometallverbindung, die
Metall-Sauerstoff-Kohlenstoff-Bindungen aufweist, herstellen
lassen. Wahlweise können diese Verbindungen auch durch Um
setzung des jeweiligen Metallalkoxids mit einem silanolend
ständigen Organosiloxan oder durch Umsetzung des jeweiligen
Metallhalogenids mit einem Alkalimetallsilanolat hergestellt
werden.
Als Komponente (3) der erfindungsgemäßen Zusammensetzungen
werden im allgemeinen vorzugsweise die Siloxymetallverbindun
gen (i) verwendet, und zwar insbesondere Organosiloxane, bei
denen wenigstens 80% der gesamten siliciumgebundenen or
ganischen Gruppen Methylgruppen sind. Solche Organosiloxane
sind in den Polydiorganosiloxanen (1) besser löslich und da
rin somit leichter dispergierbar. An Stelle der oder in Kom
bination mit den Siloxymetallverbindungen können jedoch auch
die Zirconiumcarboxylate verwendet werden, wie Zirconium
acetat, Zirconiumbutyrat und Zirconiumoctanoat.
Die Komponente (3) ist in einer solchen Menge vorhanden,
daß sich hiervon 0,001 bis 0,25 Gewichtsteile,
vorzugsweise 0,005 bis 0,1 Gewichtsteile, an Metall auf 100
Gewichtsteile des Polydiorganosiloxans (1) ergeben.
Die erfindungsgemäßen Zusammensetzungen können hergestellt
werden, indem die Komponenten (1), (2) und (3) in irgendeiner
Reihenfolge einfach miteinander vermischt werden. Am günstig
sten ist es normalerweise jedoch, wenn man die Komponenten
(2) und (3) zur Komponente (1) gibt.
Die Zusammensetzungen aus den Komponenten (1), (2) und (3)
sind unter den Bedingungen einer hohen Scherkraft bei er
höhten Temperaturen abbaubeständig. Sie eignen sich daher
insbesondere als viskose Kupplungsflüssigkeiten, beispiels
weise bei Kupplungen von Automobilventilatoren, wo die Auf
rechterhaltung einer stabilen Arbeitsviskosität während einer
langen Zeitdauer erforderlich ist.
Das folgende Beispiel zeigt die Herstellung einer erfindungs
gemäßen Zusammensetzung, und darin sind alle Teilangaben als
Gewichtsangaben zu verstehen.
Man versetzt 89 Teile eines trimethylsilylendblockierten
Polydimethylsiloxans mit einer Viskosität von 9 × 10-3 m2/s
(9 000 cSt) bei 25°C mit 9,9 Teilen eines trimethylsilylend
blockierten Copolymerisats aus 90 % Dimethylsiloxaneinheiten
und 10% Methylphenylsiloxaneinheiten mit einer Viskosität
von 10-4 m2/s (100 cSt) bei 25°C. Dieses Gemisch wird dann
unter Rühren zuerst mit 0,5 Teilen eines Polydimethyl
siloxans, das an jedem seiner endständigen Siliciumatome eine
p-Anilinophenoxygruppe aufweist und über ein Molekulargewicht
von etwa 2 000 verfügt, und anschließend mit 0,6 Teilen eines
Zirconium enthaltenden Methylsiloxans, das 3 Gewichtsprozent
Zirconium enthält, versetzt, und das durch Erhitzen eines Ge
misches aus Polydimethylsiloxan und Zirconiumoctanoat herge
stellt worden ist. Es wird so lange weitergerührt, bis das
Gemisch homogen ist.
Das in obiger Weise erhaltene Gemisch zeichnet sich bei Ver
wendung als viskose Kupplungsflüssigkeit in der Ventilator
kupplung eines Hochleistungsmotors eines Automobils durch
eine langzeitig anhaltende Stabilität seiner Arbeitsviskosi
tät aus.
In der oben beschriebenen Weise werden 4 weitere Organo
siloxangemische A, B, C und D hergestellt, die jeweils
0, 0,6, 1,0 und 2,0 Teile des Zirconium enthaltenden Methyl
siloxans enthalten. Jedes dieser Gemische unterzieht man dann
unter Verwendung des thermogravimetrischen Analysators TCS-2
von Perkin Elmer einer thermogravimetrischen Analyse, wobei
die Temperatur unter einer Geschwindigkeit von 30°C pro
Minute angehoben wird. Bei der Probe A setzt der Beginn einer
raschen Gewichtsabnahme (was auf einen Polymerabbau hinweist)
bei 492°C ein, wobei der gesamte Gewichtsverlust der Probe
bei etwa 650°C auftritt. Bei den Proben B, C und D setzt der
Beginn eines raschen Gewichtsverlustes erst nach Erreichung
einer Temperatur von etwa 600°C ein, wobei der gesamte
Gewichtsverlust dieser Proben (Gewichtsverlust von 100%)
erst bei Temperaturen von etwa 700 bis 750°C auftritt.
Claims (4)
1. Flüssige Organopolysiloxanzusammensetzung aus (1) 100 Ge
wichtsteilen eines flüssigen Polydiorganosiloxans, bei dem
wenigstens 70% der gesamten organischen Substituenten
Methylgruppen sind und die eventuellen restlichen orga
nischen Substituenten aus Alkylgruppen mit 2 bis ein
schließlich 14 Kohlenstoffatomen und Phenylgruppen ausge
wählt sind, und (2) 0,01 bis 7,5 Gewichtsteilen eines Or
ganosiloxans, das wenigstens eine siliciumgebundene Gruppe
enthält, die aus Anilinophenoxygruppen und Naphthylamino
phenoxygruppen ausgewählt ist, dadurch gekennzeichnet, daß
diese Organopolysiloxanzusammensetzung als weitere Kom
ponente (3) eine Metallverbindung enthält, die ausgewählt
ist aus (i) Siloxymetallverbindungen, welche in ihrem
Molekül wenigstens ein Metallatom aufweisen, das aus Ti
tan-, Zirconium- und Hafniumatomen ausgewählt ist und über
eine TiOSi-, ZrOSi- oder HfOSi-Bindung an Silicium gebun
den ist, und (ii) Zirconiumsalzen von Monocarbonsäuren,
wobei diese Metallverbindung in einer solchen Menge
zugegen ist, daß sich 0,001 bis 0,25 Gewichtsteile Metall
ergeben.
2. Organopolysiloxanzusammensetzung nach Anspruch 1, dadurch
gekennzeichnet, daß das Polydiorganosiloxan (1) aus 70 bis
95 Gewichtsteilen eines Polydimethylsiloxans und 5 bis 30
Gewichtsteilen eines Polymethylphenylsiloxans und/oder
eines Copolymerisats aus Dimethylsiloxan und Methylphenyl
siloxan besteht.
3. Organopolysiloxanzusammensetzung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß das Polydiorganosiloxan (1)
eine Viskosität im Bereich von 0,001 bis 0,05 m2/s hat.
4. Verwendung einer Organopolysiloxanzusammensetzung nach
irgendeinem der Ansprüche 1 bis 3 als viskose Kupplungs
flüssigkeit.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB878709745A GB8709745D0 (en) | 1987-04-24 | 1987-04-24 | Liquid organosiloxane compositions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3813660A1 DE3813660A1 (de) | 1988-11-17 |
| DE3813660C2 true DE3813660C2 (de) | 1998-09-24 |
Family
ID=10616299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3813660A Expired - Lifetime DE3813660C2 (de) | 1987-04-24 | 1988-04-22 | Flüssige Organopolysiloxanzusammensetzung und ihre Verwendung als Kupplungsflüssigkeit |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4840743A (de) |
| JP (1) | JP2595294B2 (de) |
| BE (1) | BE1000209A6 (de) |
| CA (1) | CA1314280C (de) |
| DE (1) | DE3813660C2 (de) |
| FR (1) | FR2614308B1 (de) |
| GB (2) | GB8709745D0 (de) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2683547B2 (ja) * | 1988-09-09 | 1997-12-03 | 東燃株式会社 | 耐熱安定性に優れたシリコーン油組成物 |
| JP2671146B2 (ja) * | 1989-01-31 | 1997-10-29 | スズキ株式会社 | アイドル回転数制御装置 |
| DE69017749T2 (de) * | 1989-05-10 | 1995-07-06 | Tonen Corp | Silikonflüssigkeiten für Visco-Kupplungen. |
| US4898956A (en) * | 1989-06-27 | 1990-02-06 | Dow Corning Corporation | Method to prepare thermo-oxidatively stable phenylmethylsiloxane fluids |
| EP0462777B1 (de) * | 1990-06-18 | 1995-01-18 | Tonen Corporation | Hydraulik-, Schmier- und Kupplungsmittelzusammensetzung |
| US5130041A (en) * | 1990-06-21 | 1992-07-14 | Dow Corning Corporation | Silicone fluid compositions having reduced viscosity temperature coefficient |
| JPH06158076A (ja) * | 1992-11-20 | 1994-06-07 | Cosmo Oil Co Ltd | ビスカスカップリング用流体組成物 |
| US5599778A (en) * | 1994-01-28 | 1997-02-04 | Dow Corning Toray Silicone Co., Ltd. | Organosiloxane lubricant compositions |
| JPH08143883A (ja) * | 1994-11-17 | 1996-06-04 | Dow Corning Asia Ltd | 耐熱性グリース組成物 |
| GB9613756D0 (en) * | 1996-07-01 | 1996-09-04 | Bingley Michael S | Additive composition |
| US6623399B2 (en) | 2001-12-28 | 2003-09-23 | Dow Corning Corporation | Traction fluids |
| WO2021141836A1 (en) | 2020-01-09 | 2021-07-15 | Dow Silicones Corporation | Branched polysiloxanes and methods for their preparation and use as heat transfer fluids |
| CN113755226B (zh) * | 2021-10-21 | 2022-04-29 | 华亿金卫(杭州)能源有限公司 | 一种油溶性有机锆减摩剂及其制备方法 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4537691A (en) * | 1983-11-14 | 1985-08-27 | Shin-Etsu Chemical Co. Ltd. | Silicone-based working fluid composition |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3328350A (en) * | 1966-07-05 | 1967-06-27 | Union Carbide Corp | Stabilized organosilicon polymers |
| US4193885A (en) * | 1977-08-02 | 1980-03-18 | Dow Corning Corporation | Method for preparing a thermal-stability additive and a thermally stabilized methylpolysiloxane and compositions therefrom |
| US4379094A (en) * | 1981-12-30 | 1983-04-05 | Union Carbide Corporation | Ferrosiloxane thermal stabilizers for diorganopolysiloxanes |
| JPS61185597A (ja) * | 1985-02-12 | 1986-08-19 | Toray Silicone Co Ltd | 粘性流体継手用オルガノポリシロキサン組成物 |
-
1987
- 1987-04-24 GB GB878709745A patent/GB8709745D0/en active Pending
-
1988
- 1988-03-30 GB GB8807574A patent/GB2203750B/en not_active Expired - Lifetime
- 1988-04-07 US US07/179,463 patent/US4840743A/en not_active Expired - Fee Related
- 1988-04-12 CA CA000563888A patent/CA1314280C/en not_active Expired - Fee Related
- 1988-04-13 JP JP63089177A patent/JP2595294B2/ja not_active Expired - Lifetime
- 1988-04-20 BE BE8800452A patent/BE1000209A6/fr not_active IP Right Cessation
- 1988-04-20 FR FR8805216A patent/FR2614308B1/fr not_active Expired - Lifetime
- 1988-04-22 DE DE3813660A patent/DE3813660C2/de not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4537691A (en) * | 1983-11-14 | 1985-08-27 | Shin-Etsu Chemical Co. Ltd. | Silicone-based working fluid composition |
Also Published As
| Publication number | Publication date |
|---|---|
| BE1000209A6 (fr) | 1988-08-23 |
| JPS63275665A (ja) | 1988-11-14 |
| GB2203750A (en) | 1988-10-26 |
| FR2614308B1 (fr) | 1992-10-09 |
| GB8709745D0 (en) | 1987-05-28 |
| US4840743A (en) | 1989-06-20 |
| GB8807574D0 (en) | 1988-05-05 |
| FR2614308A1 (fr) | 1988-10-28 |
| JP2595294B2 (ja) | 1997-04-02 |
| CA1314280C (en) | 1993-03-09 |
| GB2203750B (en) | 1991-04-24 |
| DE3813660A1 (de) | 1988-11-17 |
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| 8128 | New person/name/address of the agent |
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| 8110 | Request for examination paragraph 44 | ||
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